The GCF stands for "greatest common factor", it means the greatest monomial or number that is a factor of all the elements in the expressions. To factor the expressions we must find this number or monomial and divide all the numbers by it, representing the expression as a product of the GCF with the divided expression. This is done below:
1)
![3v^2-27v-30](https://img.qammunity.org/2023/formulas/mathematics/college/xd4hjlh5212gcsf5wlt46r5zhozzppxqg3.png)
If we look at all the factors the only common factor between them is "3", therefore:
![3\cdot(v^2-9v-10)](https://img.qammunity.org/2023/formulas/mathematics/college/ww0pso5apuxhqqz7lu81l3d0n1zk1bqcmj.png)
2)
![6n^2+72n+192](https://img.qammunity.org/2023/formulas/mathematics/college/oatiqc0uvfqc8qxp13e7zmgjrgkn0cen0t.png)
If we look at all the factors the only common factor between them is "6", therefore:
![6\cdot(n^2+12n+32)](https://img.qammunity.org/2023/formulas/mathematics/college/tkahhm7vgo0uinhtpujfh08qcrbl1gu3hd.png)